Bioscience Biotechnology and Biochemistry · 2010 · 49 citations · 0 references
Life SciencesPlant BiologyPlant SciencesPlant EvolutionPlant GeneticsPlant GenomicsEthylene BiologyGenome Evolution In PlantsPlant Hormone PhysiologyPlant Hormone SignalingPlant HormonesSignal Transduction In PlantsCurated Genome DatabasesCytokinin Receptor Histidine KinasesCytokinin ReceptorsCytokinin Response RegulatorsCytokinin Signal TransductionCytokinin Signaling PathwaysGenome Annotation DatabasesReference Genome Databases
Physcomitrella patens, belonging to bryopsida, is a basal lineage of land plants. To gain insight into the diversification of the two-component system (TCS), which is widely conserved from prokaryotes to eukaryotes, we compiled TCS-associated genes by employing P. patens genome databases. The moss has a set of His-kinases (HKs), including homologs of the cytokinin- and ethylene-receptors in seed plants. In addition, it has a number of coding-sequences specifying unique HKs. We found evidence that a putative cytokinin-receptor HK in P. patans serves as a sensor for this hormone, and that the HK activity of a putative ethylene-receptor homolog is regulated by ethylene, as observed for Arabidopsis thaliana.